Easiest way to BIOS on Win 10

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  • Announcing “BootAble” – GRC's New Boot-Testing Freeware
    Please see the BootAble page at GRC for the whole story.
  • BootAble – FreeDOS boot testing freeware

    To obtain direct, low-level access to a system's mass storage drives, SpinRite runs under a GRC-customized version of FreeDOS which has been modified to add compatibility with all file systems. In order to run SpinRite it must first be possible to boot FreeDOS.

    GRC's “BootAble” freeware allows anyone to easily create BIOS-bootable media in order to workout and confirm the details of getting a machine to boot FreeDOS through a BIOS. Once the means of doing that has been determined, the media created by SpinRite can be booted and run in the same way.

    The participants here, who have taken the time to share their knowledge and experience, their successes and some frustrations with booting their computers into FreeDOS, have created a valuable knowledgebase which will benefit everyone who follows.

    You may click on the image to the right to obtain your own copy of BootAble. Then use the knowledge and experience documented here to boot your computer(s) into FreeDOS. And please do not hesitate to ask questions – nowhere else can better answers be found.

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Sep 25, 2020
Most of us will need to disable Secure Boot in the BIOS. On windows the easiest and universal way to get to the BIOS is from settings;
Settings->Update & security->Recovery->Advanced startup->Restart now->Choose an option->Troubleshoot->Advanced options->UEFI Firmware settings->Restart yes it's a lot of clicks but simple enough
@garryweil : The only glitch there might be the reference to "UEFI" since DOS is "BIOS only" and all of my work (SpinRite, ReadSpeed, etc.) is currently on top of DOS. So we're not currently able to do anything on a UEFI system that doesn't at least have a BIOS emulation (CSM) mode. :-/ That IS where my post SRv6.1 work will be aimed, however.
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Reactions: Barry Wallis

The fastest way to exit Windows to the UEFI settings is using the shutdown.exe CLI app via:

shutdown /r /fw

This has to be used from an elevated CMD.EXE command prompt to work.

Kind Regards

Simon Zerafa
Cool, way faster than using settings! Thanks I'll remember this